1

®

FN7340

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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EL6206

Laser Driver Oscillator

The EL6206 is a push-pull oscillator

used to reduce laser noise. It uses the

standard interface to existing ROM

controllers. The frequency and amplitude are each set with a

separate resistor connected to ground. The tiny package and

harmonic reduction allow the part to be placed close to a

laser with low RF emissions. An auto turn-off feature allows it

to easily be used on combo CD-RW plus DVD-ROM pick-

ups.

One external resistor sets the oscillator frequency. Another

external resistor sets the oscillator amplitude. If the APC

current is reduced such that the average laser voltage drops

to less than 1.1V, the output and oscillator are disabled,

reducing power consumption to a minimum.

The current drawn by the oscillator consists of a small bias

current, plus the peak output amplitude in the positive cycle.

In the negative cycle the oscillator subtracts peak output

amplitude from the laser APC current.

This part is pin-compatible to the EL6201. It is superior to the

EL6201 in several ways: It has up to 100mA output

capability, it is faster (up to 600MHz), it is more power-

efficient, it has less harmonic content, and it has an auto

shut-off feature activated at 1.1V.

The part is available in the space-saving 5-pin SOT23

package. It is specified for operation from 0

°C to +85°C.

Pinout

EL6206

(5-PIN SOT23)

TOP VIEW

Features

• Low power dissipation

• User-selectable frequency from 100MHz to 600MHz

controlled with a single resistor

controlled with a single resistor

• Auto turn-off threshold

• Soft edges for reduced EMI

• Small 5-pin SOT23 package

Applications

•DVD players

• DVD-ROM drives

• CD-RW drives

• MO drives

• General purpose laser noise reduction

1

2

3

5

4

VDD

RFREQ

GND

IOUT

RAMP

Ordering Information

PART NUMBER

PACKAGE

TAPE & REEL PKG. DWG. #

EL6206CW-T7

5-Pin SOT23

7” (3K pcs)

MDP0038

EL6206CW-T7A

5-Pin SOT23

7” (250 pcs)

MDP0038

Data Sheet

June 10, 2004